Glass-blowing machine.



v. M. DOBSEY. GLASS- BLOWING MACHINE. APPLICATION FILED FEB-15.1908.RENEWED MAY 31,1912.

1,156,868. Patented Oct. 12, 1915.

6 SHEETS-SHEET I.

WITNESSES V. M DORSEY. GLASS BLOWING MACHINE. APPLICATION FILED FEB. I5.1908- .RENEWED MAY 31,1912.

1,156,868. I Patented 00. 12, 1915.

6 SHE ETSSHEET 2.

WITNESSES V M. DORSEY.

GLASS BLOWING MACHINE. APPLICATION FILED- FEB. 15. I908- RENEWED MAY31,1912

1,156,868. 7 I I Patented Oct. 12, 19 15 6 SHEETSSHEET 3.

INVENTOR 1,156,868. Patented 0111. 12, 1915 6 SHEETS-SHEET 4.

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WITNESSES V M. 'DORSEY.

GLASS BLOWING MACHINE. APPLICATION FILED FEB-15.1908. RENEWED MAY31.1912.

Patented Oct. 12, 1915.

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I v l I WITNESSES .V. M. DORSEY.

GLASS BLOWING MACHINE.

APPLICATION FILED FEB-15. 1908- RENEWED MAY T 1,156,868.

1912- Patent-ed Oct. 12, 1915.

6 SHEETS-SHEET 6.

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n My I I 7 -v cmosmq cam UNITED STATES PATENT OFFICE.

VERNON M. DORSEY,' OF LAUREL GROVE, MARYLAND, ASSIGNOR TO EMPIRE MACHINECOMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

GLASS-BLOWING MACHINE.

Specification 'ofiLctters Patent.-

Application filed February 15, 1908, Serial No. 416,152. Renewed May 31,1912. Serial No. 700,800.

To all whom it may concern.-

Be it known that I, VERNON M. DORSEY, a citizen of the United States ofAmerica, and a resident of Laurel Grove, St. Marys county, State ofMaryland, have invented certain new and' useful Improvements inGlass-Blowing Machines, of which the following is a specification.

My invention relates to a machine for performing certain operationsattendant upon the production of blown glass articles.

In the usual processes employed for the production of such articles, asuitable quan tity of glass having been gathered upon the end of ablow-pipe, it receives a preliminary shaping by marvering' or swinging,and is then inserted in a separable mold, (which is closed thereon) andis blown while located within the mold by admitting air to the interiorthereof,rotating being simultaneously imparted tovthe blow-pipe or moldin respect to eachother for the purpose of eliminating the impressionwhich would otherwise be made by the joint of the mold.

The machine forming the subject matter of this application is adapted toreceive and support a vblow-pipe upon which the glass has been properlygathered, and to thereafter perform the operation necessaryfor theproper manipulation of the mold, that is to say close it, wet it, andopen it and to admit air from a suitable source to the blowpipe and alsoto impart rotation .to the blow-pipe in respect to the mold, theseoperations being performed either entirely auto- 'matlcally or needingonly the initiation of the operator beingsubsequently carried out by theaction of the machine.

Inthe specific form of apparatus which I have illustrated, the mold isnormally open and heldraised above a suitable water tank,

and upon the operator having inserted the blow-pipe with the gathered,glass thereon in a suitable rest, he then connects a suitable source ofmotive power with the several parts of the machine, whereby the moldwill be closed, air admitted to the blow-pipev and the blow-piperotated, during a definite period, after which the mold will be opened,

lowered in the bath and subsequently raised, at which time the partswill stop in the position which they had at the initiation of theoperation, but with the article now fully it while lifted and forlowering it and liftmg it while opened and for'mainta-ining it in itsraised closed position during the proper blowing intervals and in itslowered open position during a proper cooling interval. It alsocomprises means for supporting ablow-pipe above the mold with means forrotating the blow-pipe in respect to the mold and for conducting airthereto, and a Patented Oct. 12, 1915. a

means for admitting air to the blow-pipe during predetermined[parts ofthe cycle of the mold movements before described.

It further comprises means whereby the mold operating -mechanisni andthe air mechanism wil'l'be normally maintained in.

a definite position, and whereby motion can be imparted to suchmechanism for a definite period, after which the parts will beautomatically restored to their normal position, without requiringlthepresence or action of an attendant except to initiate the movement ofsuch parts, by which means the attendant after having placed theblowpipe upon the rest and initiated the move- -ment of the machine mayleave it to automatically perform .the succeeding operations. i

The invention of thisapplicatio'n therefore consists in variousmechanisms and'instrun entalities for effecting the aforesaid operationsand their combination-and arrangement, as will be hereinafter more fullyescribed and claimed. V Referring to the accompanying drawings, in whichcorresponding parts are designated by corresponding marks'of reference:Fig-

ure 1 is a side elevationof a machine constructed-in accordance withthis invention, viewed from the cam side, the parts being in normalposition. F ig. 2 is a plan view of the head thereof: Fig. 3' is sectionon lines w a= thereof. Fig. 4 is a front elevation of the lower part ofthe machine shown in Fig. 1, having the front of the tank broken awayfor the purpose of better illustration and with all parts in theirnormal position, that is to say with the mold up open. Fig. 5 is acentral longitudinal section on the linesw m of' Fig. i, the mold inthis figure being represented as up and closed. Fig. 6 is a fragmentalview similar to Fig. 5 but showing the molds down and open. Fig. 7 is arear elevation of the lower part of the machine shown in Fig. 1, partlyin section. Fig. 8 is a vertical transverse section taken through thelower part of the machine on lines 00"00 of Fig. 10. Fig. 9

is afragmen tal section on lines 0'0 00 of Fig. 10. Fig. 10 is asection, showing the base of the machine in Fig. 1 in plan. Fig. 11 isa. vertical section through the chuck blocks,

chuck and the supporting arm. Fig. 12 is a longitudinal section throughthe blow-pipe rest showlng the driving mechanism thereof.

Fig. 13 is an inverted plan of the rest shown.

in Fig. 12. Fig. l i is a side elevation thereof. Fig. 15 is a frontelevation of the rest. Fig. 16 is a detail elevation of the blow-pipe.showing the supporting flange thereon. Fig.

17 is a view illustrating the several cams which are employed-in themachine. Fig. '18 is a perspective showing of the mold operatingmechanism.

In these dIZLWIII 'S a machine is shown generally suitable for themanufacture ofwhat is known as a No. 3 electric lamp bulb, the scale ofFigs. 1 to 9 and 17 being 1 to 8:

, that of Fig. 10 beingl to 1 and that of Figs.

11 to 16 being 1 to 2, and with a maximum output of 6 bulbs per minute,when the mainshaft is driven-at the speed of one revolution in each tenseconds.

A suitable base upon which all the parts. are mounted provided andpreferably consists of a table 1, provided with legs 2, and having asuitable recess 3 to receive a mold tank, comprising a body casting 4and a. well casting 5. The body casting has a rearward restrictedportion 6, divided by a transverse partition wall 7 The part of the bodycasting between the frontwall thereof and the partition 7 forms a moldreceptacle, and has .an aperture in its bottom beneath which is boltedthe well casting. A guidespider 8 is inserted at the mouth of the wellcasting to serve as a guide for the lowerend of the V mold carryingplunger 9, the upper end of which is provided with a cross-head 10runbody casting. on its upper surface and in front and behind the axialline of the plunger with an ear 12, through which and through webs 13 onthe separate parts 14 of a two-part mold, a pivot pin'15 passes. Themold therefore able upon the mold plunger. A second collar 19 is rigidlyaffixed to the. plunger 9 beneath the collar 18 andeach of these collarsis slidingly connected to the front end of .a pair of levers, viz., themold closinglevers 20 and. the mold lifting levers '21, respectively,which have their rear ends pivoted upon pins 22 and 23, respectively,passing through the sides of the mold tank near the rear thereof atpoints intermediate of the top and bottom thereof. Each pair of the twopairs of levers is further connected, intermediate of their ends, bypins21 and 25,

respectively, attached to the. lower end oflinks '26 and 27respectively, the upper ends of which are pivotally attached to the endsof the tappet levers 28 and 29 respectively. The opposite ends of thetappet levers are carried by the projection 30 arising from a bearing 31fastened to the table to one side of the mold tank. It will be seen thatas the mold lifting tappet lever 29 is lifted the plunger attachedthereto will be raised and thus the mold will be lifted, while ifdepressed the mold will drop into the tank.

It will be furtherseen, if the collar 18 is raised in respect to themold plunger, that the mold will be closed, whereas if it. is lowered inrespect thereto the'mold will be opened, and that if it remainsstationary in respect to the plunger the mold will remain open or closedas was its previous condition.

Mounted in the bearing 31 and in a corresponding bearing 32 at the rearof the table is the main-shaft33, which carries near its forward end amoldclosing cam 34 and the mold lifting cam 35, these-cams being locatedbeneathtappets 36 and 37 of the mold closing tappet lever 28 and moldlifting tappet lever 29 respectively. These cams are so, shaped thatduring a certain portion of their revolution the two tappets, will beraised, the mold lifting tappet at its upper limit, and the mold closingtappet in .an intermediate position and that subsequently thereto, themold lifting tappet will be held stationary while the mold closingtappet is lifted, thus closing the molds, after which both tappets willbe held in their raised position for a definite period, after which themold closing tappet will be partly lowered, while the mold liftingtappet remains stationary, after which the two tappets will be loweredin unison, and finally will remain: stationary at the lowerli'mit oftheir movement until they are again lifted by a further revolution ofthe cams when the cyclebefore described will again take place. Camssuitable to effect this purpose are shown in Fig. 17 and in the specificembodiment herein shown, the lifting arc ab of the mold closing cam is21 degrees, the lifted arc b@ is 180, the dropping arc 0(Z is 21 and thedepressed arc (Z(t is 138, while with the-mold lifting cam the liftedarc 0,Z) and dropping arcs 0d each measure 18, the lifted arc Z)c' 186and the depressed arc (Za 138. With the shaft 33 driven at 6 revolutionsper minute and with the tappets .36 and 37 on the tappet levers 28 and29 in their position of rest shown in Figs. 1 and 17, that is to saywith the tappet-36 on the mold-closing tappet lever 36 resting at apoint 3 removed from b (the junction'of the lifting and lifted arcs) onthe mold closing cam 34 and the tappet 37 on the mold lifting tappetresting on. the mold lifting cam 35 at the point Z) (the junction of thelifted and lifting arcs) the molds will be raised and open. Upon therotating shaft 33 and the cams carried thereon, in the direction of thearrows in the several figures the tappet 36 on the mold closing cam willrun up the lifting arc a to the point' 6, thus lifting the mold closinglevers 20, the mold lifting levers remaining stationary during the time.Upon further rotation of the cams the tappets will beheld at the upperlimit of their move- 'ment. (and thus the mold held up and closed) andwill remain in this position untilthe point a (the junction of thelifting and dropping arcs) on 'the mold-closing cams comes under thetappet 36'of the mold closing tappet lever, this representing the periodof about 5 seconds. A further rotation .of the cams will then drop the'mold-closing tappet 36, which will be. the

only one so dropped until the points 0 (the junction of the, lifted anddropping arcs) 'on the mold lifting cam comes beneath the tappet 37 onthe mold-lifting tappetlever.

During this last period, the mold will be opened and Will be maintainedat its raised position. During the succeeding movement of the cams'throughan arc of 18, that is to say until. the tappets 36 and 37 on themold closing and mold lifting tappet levers, respectively, rest abovethe 'points' (Z and (Z (the junctions of the dropping and depressed arcson the respective cams), the

mold will be lowered but inasmuch as the two systems of levers aremoving in unison, no change will take place in its open position, and itwill then'remain opened and at the bottom of its st'rokewithin the tankuntil the further rotation of the cams through an arc of 138 brings thetappets 36 and 37 on the tappet levers above the points a and a on therespective cams, that is to say above the junctions of the depressed andlifting arcs thereon, this taking about l seconds, during which the moldwill be cooling.

Upon the further movement of the cams the tappets on the levers will beraised in unison, thus lifting themold still open until the tappet 37 onthe mold lifting tappet lever 1 reaches the point 6 on the mold liftingcam, that is to say the junction of the. lifting and lifted faces, atwhich time the mold will be fully raised but open and the several partswill have completed a full cycle of their operation.

.For the purpose of supplying cooling water to the mold tank, a supplypipe 38 discharges into the lower part of the well casting, while anexit pipe ,39 is lead to near the top of the mold tank for the purposeof controlling the water level therein;

By varying the rate of inflow it is obvious, that the time of cooling ofthe mold may be regulated within certain limits and it will be furtherseen that by restricting the diameter of the mold well atwthe bottom toapproximately the diameter of the plunger it is adapted to receive, (asshown in Fig. 6) the fall of the latter will be cushioned.

A standard 10, preferably hollow, arises from the rear end of the moldtank, its lower end passing through the cavity ll formed betweenthetransverse partition 7 and the rear wall thereof, and carriesintermediate by a vertical slot 46. The upper part of this bore isconical to serve as a guide for the flange uponthe blow-pipe, and thecasting has projecting downwardly therefrom on eachside of the axialline of the mold, an ear'l'i, forming a bearing in which is mounted aconical pulley 18, the 'two pulleys being adapted to support a blow-pipe49 by means of a conical flange 50, on the latter. This flange may, asshown in Fig. 16 be formed upon a collar 51 adjustably clamped upon theblow-pipe intermediate of its ends, the upper end of the pipe beingconed as at 52 a (Fig. 11) to fit the airchuck to be hereinafterdescribed. The projecting arm 13 consists of two sides 43 united by afront web 43, and in such web a shaft 53 is mounted, the rearend of theshaft taking into a socket 54in the collar 42. The forward end of theshaft projects to a point adjacent to and between the supporting pulleys-;t8, where it receives a cone driving pulley 55, which is splined .uponthe said shaft, and which-is projected toward the axial line of the moldand thus between the pulleys 48, by means of a spring 57 interposedbet-ween the hub ofthe driving pulley and a collar 58 upon the shaft 53,the shaft being driven by a chain or belt 59 I passing over a pinion 59thereon and over a a washer 84 located in block and the cone is 82carried by the when adjusted in height to conform to '68, the inner faceof which is packed with rubber or other suitable material 69. Balls areinterposed between the cone and the held in place within the block bymeans of a face plate 71 secured to the lower end of the block.

' The upper end of vided with a suitable coupling to receive a flexiblehose 72 by which ,it is connected to a vertical air pipe 73, which hasits lower end connected with an air tank 71 located, by preferencebeneath the table. An air valve 75 is located in the verticalpipe nearthe top thereof, and has the-arm thereof connected by the rod 77 withthe inner end of a lever 78 pivoted in'a bracket 79 to one side of thetank casting, the outer'end ofthe lever'resting upon a suitable cam 80,fastened upon the main shaft 33. The 'valve is normally held closed by aspring 81 tensionedbetween. the arm 76 and a projection pipe and isopened at proper times by the cam, the contour of which is such astocause the air to be ad-' mitted in quantities and at times demanded a bythe article being blown.

The standard 40 is guided by a, collar 83 secured to the top. of therear. of the tank casting above the cavity 41 therein,'and by the lowerend of the said cavity a-boie the bottem thereof,

and can be raised or lowered by means of a jack 85 carried by a stirrup86 hung from the bottom of-the table below the said cav- -ity, a cap 87being upon the'lower end of the standard to receive the thrust ofthejack; The standard is further locked in place the length of theblow-pipe used by means of a saddle block 88Qlocated in the cavity andpressed against the standard by a set screw 89 projecting through therear wall of the tank casting.

- Upon the rear suitable motor' which drives by means of a worm 91 and aof the table 1 is mounted a worm wheel 92, the main shaft 33 upon whichthe last named wheel is mounted. The cross-shaft forming the connectionbetween the motor and worm is formed by two parts 93 and 94 adapted tobe mechanically rounds the part 95 located in a groove 99 therein,

the block stem is proter of themachine, thus 90, by preferenceelectric,"

connected by means of a clutch, consisting of the two parts 95 and 95the former of which is secured upon the part 93 of the crossshaft, whilethe latter is splined upon the part 94 of said shaft, which carries theworm, and is adapted to be moved thereon into and out of engagement withthe part 95 of the clutch by means of the yoke 96 having an arm 97pivoted at its forward end to table. The yoke surof the clutch and isand carries a block 98upon the rollers 100 to reduce friction.

The clutch is normally held in its' open position by a coiled spring 101located between the arm 97- and the side of the mold tank. A suitablepump 102, actuated by the eccentric 103 formed upon the hub of theclutch part 95, feeds air to the air tank 7 1 and is hung beneath therear of the table.

A bracket 104, fastened to the block 98 and intermediate of the ends ofthe yoke arm and between it and the tank, serves as a pivot for a' camlever 105, which has a cam face 106 so located and shaped that with theclutch open, upon the depression of the free end of this lever, thecam-face will engage the outer side of the yokearm, and by slidingthereon will swing it toward the center of the machine, thus engagingthe clutch. To permit this depression of the cam lever, a footlever-107, which projects to the front of the table and there, forms apedal 107 is pivoted beneath the table near the rear thereof and isconnected by a link 108 with the free end of the said cam lever, itbeing normally held in its raised position by means of a spring 109surrounding the said link and interposed between the table and the endof the said cam lever, which thus forms the actuating lever for theclutch.

'A'second cam lever 110 is pivoted in a bracket 111 secured to the outerside of the block 98 and is adjacent to the clutch actuating lever,its'pivot 112 being intermediate of its ends. Its inner end is slightlybeveled as at 113 so that when depressed, after' the arm hasbeen movedtoward, the center line of the machine, it falls upon the outsidethereof and will on a further depression tend to press the yoke arm moretoward the cen the more firmly engaging the clutch members and lockingthe clutch. The depression of the cam end of this locking cam lever iseffected by a spring 114 interposed between its opposite end and thetable, and is controlled by an unlocking ppe main shaft 33, upon whichwheel a tappet 116 upon the last named end of the said lever rests. Thewheel 115 is so shaped that when the mold is in its raised position oropen, 'the tappet portion of the cam will lie above the tappet 116 onthe locking lever,

wheel or cam 115 located upon the v while in any other position, a cutaway part of the said wheel will lie above the said pp The operation ofa machine organized as above described with .the parts in positionshown'in Figs. 1, l, 7, 8 and 10 is as follows: The operator havinggathered a suitable mass of glass upon a blow-pipe and having given itsuch preliminary treatment as is .usually given glass in hand blowingprior to its introduction into the mold, inserts the upper end of theblow-pipe in the air chuck,

and by means of the blow-pipe raises it so as to permit the flange ofthe blow-pipe to be above the rim ofthe socket of the center rest. Hethen inserts the blow-pipe beneath the flange thereon through the slotin the socket and releases the blow-pipe which then descends until theflangev bears upon the supporting pulleys forming apart of the rest.Upon now depressing the forward end of the foot lever, he, by means ofthe actuating cam 105, forces the yoke arm toward the center line of themachine and thus throws in the clutch, whereupon the main shaft will begiven movement. The initial movement of the shaft by means of thecamclosing lever closes the mold, and furthermore carries the tappetportion of the unlocking cam 115 from over the tappet 116 on the end ofthe locking lever 110, thus releasing the spring 111 to force theopposite end of the said lever down past the yoke arm, thus locking theclutch in engagement. He can now remove his foot and the machine willcomplete its cycle of operation. The blowpipe will be rotated by means,in'the structure shown, of the shaft 53, driving gear 59 59 and 60,driving pulley 55 and the supporting pulleys 48 upon which the blowpipeflange rests. The initial movement of the shaft 33 after the closing ofthemold effects no change in the mold,-but at the proper period thedescending are of the mold closing cam will permit the moldto open andthen in connection with the descending arc of'the mold lifting cam willpermit the mold to descend into the inold tank where it will be cooledduring the succeeding part of the rotation of the shaft and until thetappets upon the mold closing and mold lifting mechanisms engage theascending arcs of the said cams and raise the mold, still open, to itslifted position, at which time the tappet part of the locking cam willengage the tappet 116 upon the end of the locking lever 110 anddepresses that end thereof, thus raising the yoke arm engaging end andreleas ng the sa1d arm and permitting the spring 101 to open anddisengages the clutch, whenthe parts, will stop in their normalposition. The blow-pipe with its completed article may now be removedand a new pipe with its gathering of glass thereon inserted and theoperation before described repeated. It will be seen that by thisconstruction the blower or gatherer may after inserting the blow-pipewithin the machine, leave the machine and proceed with the gathering ofa fresh batch, lea'vmg'the completed article to be removed by anotheremployee. As the time for gathering is much greater than the time forblowing and cooling, a single machine will be able to perform theblowing of a number of gatherers, whose output will be increased by thetime necessary, in hand blowing, for the blowing period. I

In order to avoid accurate fitting which might, unless present, resultin the shearing or breaking of the connection between the mold closingtappet 28 and the mold closing collar, I'may, if I sodesire, and as isshown in Fig. 18, make the connection between the link 28 and collarv bya resilient part through which the motion of the one is transmitted tothe other. This, as shown in said figures, consists in a spring 117secured to the mold closing tappet 28 and engaging an ear 120 on, thelink 2-6, so that the link will be lifted by the spring which will giveand accommodate itself to the inaccuracies of adjustment or constructionof the parts and will close the mold with certainty without undue'strain upon the parts. I

It will be noted that' the mold closing mechanism comprising thelinks-17, collar 18, and levers 21, has a support in the mamovement ofthe mold-closing mechanism simultaneously with the mold lifter if theposition of the mold parts is to remain unaltered during the movement ofthe mold lifter.

Inasmuch as the claims of this application are, under the requirementsof the Ofiice restricted to mold-operating means-,"I do not by failuretoclaim other features shown herein, and which may be also shown in myother application filed .of even date herewith, and serially numbered416,152, and renewed Dec. 30, 1911, as Sr. No. 668,762,

abandon the same.

I Having thus described my invention, what.

I claim and desire to' secure by Letters Pat cut is I 1. In a moldlifting and closing mechanism for a: glass blowing machine, thecombination with a vertically movable separable mold, of mechanism forlifting the mold, mechanism for closing the mold having a supportindependent of the movementof the mold lifting mechanism, means forsimultaneously actuating the mold lifting and mold closing mechanismsand'for 1ndependently imparting a further movement lowering the plunger,a collar movable on the plunger and connected with the mold to close it,means for moving the'plunger and means having a support independent ofthemovement of the plungerfor imparting motion to the collarsimultaneouslywith the movement of the plunger and for then moving thecollar on the plunger, substantially as described.

3. In a mold lifting and closing mechanism fora glass blowing machine,the combination with a mold tank, of a plunger, having a cross-headthereon, a guide for the plunger and guides for the cross-head locatedin the tank, a separable'mold mounted upon the cross-head, a collarmounted upon the plunger and connected with the parts of the molds andmeans having a support independent of .the movement of the plunger forsimultaneously moving the, collar and plunger and for impartingindependent motion to the collar upon the plunger, substantiallyasdescribed.

4. In a mold lifting and closing mechanism for a glass blowing machine,the com- .bination of amold tank, having a well in the bottom thereof, aplunger fitting within the well and projecting into the tank and formingwith the well a dash pot, means for .movirig the plunger, a separablemold carried on the plunger and means for opening and closing the mold,substantially as described. 5. In a mold lifting and closingmechanism-for a glass blowing machine, the combination with a mold tank,having guides therein, and a well located at thebottom ,of the tank," ofa plunger within the well and forming therewith a dash pot, a crossheadupon the plunger engaging the guides within; the tank, a separable moldlocated on the cross-head, a collar movable upon the plunger andconnected with the mold sections, levers pivoted within the tankconnectedwith the plunger and with the collar thereon and means forsimultaneously lifting the levers and for independently impartingfurther movement to the lever actuating the collar, substantially asdescribed.

6. Ina mold lifting and mold closing mechanism for a glass blowingmachine, the combination with a separable mold, of mechanism for liftingthe mold and for openingsimultaneously it, cams adapted when moved toactuate the said mechanism in a predetermined order and independently,and means for driving the said cams, substantially as described.

7. The combination with a mold-carrier and mold sections carriedthereby, of an actuator, and means actuated thereby for raising saidmolds to a position to receive the material to be molded and, while insaid position for closing said molds, and to then open said moldsanddropthe same, said means compris ng cams driven by sald actuator and beingof different contour, levers,

in operative engagement'f-with the said cams respect1vely,-and operativeconnections between said levers, respectively, and 'said mold-carrierand said mold sections, the

said levers being simultaneously actuated by said cams, and one of saidlevers being also independently operable thereby, respectively.

8. The combination with a mold-carrier, of mold sections carriedthereby, a lever, operative connections between said lever and said moldsections, whereby the rocking of said lever will alternately open andclose said mold sections, asecond lever, operative connections betweensaid second lever and said mold-carrier, whereby the rocking of saidsecond levers will alternately raise and lower saidmold-carrier,and'means for operating said levers simultaneously and thefirst lex'er independently, said'means comprising cams of differentcontour, said levers being in operative engagement with said cams,respectively, and means for actuating said cams.

9. In a glass blowing machine, the combination with a mold-carrier andmold sections carried thereby, of means for lifting the mold-carrier,means for closing the mold sections thereon, and an. actuator for themold-raising andmold-closing means so con-- structed and arranged thatthe mol'd-closing means and the mold-raising means are simultaneouslyactuated, and then further move ment is given to the mold-closing meansalone.

10. In a glass blowing machine, the combination with a mold-carrier andmold sections carried thereby, of a lever for liftingthe carrier, alever pivotally supported independently of the carrier for closing themold I parts carried by the carrier, and an actuator for simultaneouslyactuating both levers and to raise the mold carrier without changing theposition of the mold parts thereon and for then giving further movementto the moldclosing lever.

11. In a glass blowing machine, the com bination with a mold-carrier andmold sections carried thereon, of links for closing the mold parts onthe carrier, an actuator,

a connection between the carrier and the'acmold parts, a mold-liftinglever connected tuator, and an independent connection beto the carrier,a mold-closing lever connected tween the links and the actuator,'saidconto the links, cams of dissimilarcontour for nections comprising camsdriven by the actu- Simultaneously actuating the levers and for 5 atorand-of dissimilar contour'to cause simiindependently actuating theclosing lever, 15

lar and then dissimilar movement of the acand a common actuator for thecams. tuator and mold-closing links. VERNON M. DORSEY.

12. In a glass blowing machine, the com- Witnesses: bination with amold-carrier and mold sec-. GOLDEN BRO N, 1 tions carried thereby, oflinksfor closing the J. HOWARD BISHOP.

